Предмет: Математика, автор: Макс20021994

 На механических часах минутные деления нанесены небольшими черточками. Сейчас минутная стрелка отстает от часовой на 22 деления. Через сколько минут стрелки совпадут?

Ответы

Автор ответа: Матов
0
Скорость часовой стрелки равна T_{chas}=frac{1}{720} относительно часа , а минутной T_{minut}=frac{1}{60} .  Тогда пусть через х черточек они встретятся , тогда    
frac{x}{60}-frac{x}{720}=22\
x=1440 то есть часовая стрелка пройдет frac{1440}{720} 2 минуты (черточки) и тем самым всего 22+2=24  минуты 
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